Not just any car, this Lotus Excel was modified by the Top Gear crew and definitely something that 007 himself would drive. This Bond car features an extendable rear dive planes, electrically-powered rear thrusters, a double skinned passenger compartment, a roof hatch for access and a crafty ballast system that involves filling its tires with concrete. Continue reading for a video and more information.

Amazingly, this is one of the few cut-price Top Gear projects which actually worked, and this ingenious creation can truly claim to be the world's first fully functioning submarine car. Although perhaps its biggest achievement is that it has made it to World of Top Gear at Beaulieu, and isn't lying at the bottom of the lake in which it was tested!